WO2020108492A1

WO2020108492A1 - Handheld cleaning apparatus

Info

Publication number: WO2020108492A1
Application number: PCT/CN2019/121037
Authority: WO
Inventors: 殷雪冰; 闵飞; 朱晓军; 欧阳酥; 方杰
Original assignee: 江苏美的清洁电器股份有限公司; 美的集团股份有限公司
Priority date: 2018-11-27
Filing date: 2019-11-26
Publication date: 2020-06-04
Also published as: CN109330476A

Abstract

A handheld cleaning apparatus (100), comprising: a main unit assembly (1) and a dust cup assembly (2). The main unit assembly (1) comprises a suction part (12), a handle part (13), and a power supply part (14). The dust cup assembly (2) comprises: a cup housing (21) and a cyclonic separation device provided in the cup housing (21). A dust collection cavity (210) is provided in the cup housing (21). The cyclonic separation device comprises a first-stage cyclonic separator (22) and a second-stage cyclonic separator (23). The first-stage cyclonic separator (22) comprises a main body part (221). The second-stage cyclonic separator (23) comprises a plurality of cyclonic cones (2310) provided in a same stage. The plurality of cyclonic cones (2310) surrounds the main body part (221) along the circumferential direction of the main body part (221). A dust outlet of the main body part (221) and a dust outlet of each cyclonic cone (2310) are both communicated to the dust collection cavity (210).

Description

Handheld cleaning equipment

Cross-reference of related applications

This application is based on a Chinese patent application with an application number of 201811424689.5 and an application date of November 27, 2018, and claims the priority of the aforementioned Chinese patent application. The entire contents of the aforementioned Chinese patent application are hereby incorporated by reference.

Technical field

This application relates to the technical field of cleaning equipment, in particular to a handheld cleaning equipment.

Background technique

In the wireless handheld vacuum cleaner in the related art, the dust cup assembly usually includes a primary cyclone separation unit and a secondary cyclone separation unit located downstream of the primary cyclone separation unit. The primary cyclone separation unit is a single cyclone device and the axis is vertical, and the secondary The cyclone separation unit includes a plurality of flat-level cyclone cones. The multiple cyclone cones are located above the first-level cyclone separation unit, and the lower end of each cyclone cone is inserted into the first-level cyclone separation unit. Larger garbage and part of the dust in the work are separated from the air flow in the first-level cyclone separation unit, large particles of garbage and foreign objects will be collected in the first dust chamber of the outer ring; then the airflow with some fine dust particles enters In multiple flat cyclones, most of the dust particles are separated by multiple flat cyclones and collected in the second dust chamber of the inner circle of the first dust chamber. However, this type of dust cup assembly has the problems of being easily damaged, low in work reliability, not easy to clean, bulky overall structure, and laborious to hold the whole machine.

Summary of the invention

This application aims to solve at least one of the technical problems in the prior art. To this end, the present application is to propose a hand-held cleaning device that is compact in structure, light in use, and easy to store.

The hand-held cleaning device according to an embodiment of the present application includes: a host component, the host component includes a suction part, a handle part, and a power supply part, the handle part is used for hand-held gripping, and the power supply part faces the suction part Power supply to drive the suction part to generate a flowing air flow; a dust cup assembly, the dust cup assembly is provided on the host assembly, and the air flow is connected to the upstream of the suction part, the dust cup assembly includes: a cup shell And a cyclone separation device provided in the cup shell, the cup shell has a dust collection chamber, the cyclone separation device includes a first-level cyclone separator and a two-level cyclone separator, and the first-level cyclone airflow communication Upstream of the secondary cyclone separator, the primary cyclone separator includes a body portion, the secondary cyclone separator includes a plurality of cyclone cones arranged in stages, and the plurality of cyclone cones are along the body portion The circumferential direction of is around the body part, and the dust outlet of the body part and the dust outlet of each cyclone cone are connected to the dust collection chamber.

The hand-held cleaning device according to the embodiment of the present application has a compact structure, is easy to use, and is easy to store.

In some embodiments, when the handheld cleaning device is placed on a horizontal surface, the central axis of the primary cyclone and the central axis of the secondary cyclone coincide and serve as the longitudinal axis of the dust cup assembly , The longitudinal axis of the dust cup assembly is parallel to or coincides with the longitudinal axis of the suction portion and both extend in the lateral direction, the suction portion is located on the rear side of the dust cup assembly, and the handle portion is located on the suction On the rear side of the suction part, the power supply part is located below the handle part.

In some embodiments, when the handheld cleaning device is placed such that the longitudinal axis of the dust cup assembly extends vertically, the dust collection chamber is located at the bottom inside the cup shell, the primary cyclone and The second-level cyclone separators are all located above the dust collection chamber, the side wall of the cup shell has an air inlet, the body portion defines a cyclone channel, and the first-level cyclone separator further includes an inlet portion, The outlet end of the inlet portion communicates tangentially to the cyclone channel, and the inlet end of the inlet portion passes through a space between two adjacent cyclone cones to connect to the air inlet.

In some embodiments, the host assembly further includes a straw portion, the straw portion is in airflow communication upstream of the dust cup assembly, and when the handheld cleaning device is placed on the horizontal surface, the air inlet is located in the cup At the bottom of the shell, the straw portion is located below the dust cup assembly, the straw portion defines an suction channel and a curved channel, the axis of the suction channel is parallel to the longitudinal axis of the dust cup assembly, so The front end of the suction channel is a dirty air inlet, and the elbow channel extends upward from the rear end of the suction channel to connect with the air inlet on the cup shell or the inlet end on the inlet part Connected.

In some embodiments, the handheld cleaning device further includes a straw part and a connecting tube part, when the handheld cleaning device is placed on the horizontal plane, the air inlet is located in the middle of the cup shell, and the straw part is located in the An air suction channel is defined below the dust cup assembly, an axis of the air suction channel is parallel to a longitudinal axis of the dust cup assembly, a front end of the air suction channel is a dirty air inlet, and the connecting pipe portion extends up and down The direction extends and the upper end is connected with the air inlet, and the lower end is communicated with the rear end of the suction channel.

In some embodiments, the suction tube portion has a through hole, the through hole is located on a side of the elbow channel away from the suction channel, and is perpendicular to the extending direction of the suction channel The direction goes through for the finger to lift.

In some embodiments, the cross-sectional area of the inlet portion gradually decreases along the airflow direction.

In some embodiments, the inlet end of the inlet portion passes through the air inlet and out of the cup shell, and the shape of the inlet end of the inlet portion is adapted and positioned to the shape of the air inlet Cooperate.

In some embodiments, the secondary cyclone separator includes two cone groups, each of the cone groups includes a plurality of the cyclone cones, and the two cone groups are along the primary cyclone separator Are distributed at intervals in the circumferential direction, and the inlet portion is passed through the gap between the two cone groups to connect to the air inlet.

In some embodiments, the dust collection chamber includes a primary dust collection chamber and two secondary dust collection chambers, the primary dust collection chamber is in communication with the dust outlet of the cyclone channel, and the two secondary stages The dust collection chambers are respectively in correspondence with the dust outlets of the plurality of cyclone cones in the two cone groups.

In some embodiments, the dust cup assembly is detachably connected to the host assembly.

Additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be learned through practice of the present application.

BRIEF DESCRIPTION

1 is a perspective view of a handheld cleaning device according to an embodiment of the present application;

Fig. 2 is an exploded view of the handheld cleaning device shown in Fig. 1 with the dust cup assembly rotated 180°;

3 is an exploded view of the dust cup assembly shown in FIG. 2;

4 is a front view of the handheld cleaning device shown in FIG. 1;

5 is a cross-sectional view taken along line A-A in FIG. 4;

6 is a schematic diagram of the end edge of the cup shown in FIG. 3;

7 is a bottom view of the handheld cleaning device shown in FIG. 4;

8 is a cross-sectional view taken along line B-B in FIG. 7;

9 is an assembly view of some components of the dust cup assembly shown in FIG. 3;

10 is a cross-sectional view taken along line C-C in FIG. 4;

11 is a cross-sectional view taken along line D-D in FIG. 4;

12 is an assembly view of some components of the dust cup assembly shown in FIG. 3;

13 is a cross-sectional view taken along line E-E in FIG. 4;

14 is an assembly view of some components of the dust cup assembly shown in FIG. 3;

15 is a cross-sectional view taken along line F-F in FIG. 4;

16 is a schematic diagram of a body part according to another embodiment of the present application;

17 is another perspective view of the handheld cleaning device shown in FIG. 1;

18 is a top view of the handheld cleaning device shown in FIG. 17;

19 is a left side view of the handheld cleaning device shown in FIG. 17;

20 is a front view of a handheld cleaning device according to another embodiment of the present application;

21 is a right side view of the handheld cleaning device shown in FIG. 20;

22 is a left side view of the handheld cleaning device shown in FIG.

Reference mark:

Handheld cleaning equipment 100;

Host assembly 1; suction tube section 11; suction channel 111; dirty air inlet 1110;

Elbow channel 112; through hole 113;

Suction section 12; handle section 13; power supply section 14;

Dust cup assembly 2;

Cup shell 21; dust collection chamber 210; primary dust collection chamber 2101; secondary dust collection chamber 2102;

Outer shell 211; air inlet 2111; raised portion 2112;

Inner layer plate 212; cup cover 213; sealing pad 214; dust barrier 215;

Primary cyclone 22; body part 221; cyclone channel 2210; first dust outlet 22101;

Skirt structure 2211;

Inlet 222; Inlet channel 2220; Inlet end 2221; Outlet end 2222;

Central filter cartridge 223; transition channel 2230; filter hole 2231;

Secondary cyclone 23; cone group 231; cyclone cone 2310; second dust outlet 23101;

Gap 2311; curved plate 2312;

Diversion end plate 232; communication channel 2320; tangential inlet 2321; center hole 2322;

Air outlet cover 233; air outlet pipe 2331; first end 23311; second end 23312;

Diversion protrusion 2332;

Upper seal 234; Lower seal 235;

Filter assembly 3; filter cotton 31; filter cotton holder 32;

Convex block 41; rotating slide 42; entrance 421; locking end 422;

The connecting pipe section 5; the first connecting pipe section 51; the second connecting pipe section 52.

detailed description

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit this application. In addition, the present application may repeat reference numerals and/or letters in different examples. This repetition is for simplicity and clarity, and does not itself indicate the relationship between the various embodiments and/or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the applicability of other processes and/or the use of other materials.

In the wireless handheld vacuum cleaner in the related art, the dust cup assembly usually includes a primary cyclone separation unit and a secondary cyclone separation unit located downstream of the primary cyclone separation unit. The primary cyclone separation unit is a single cyclone device and the axis is vertical, and the secondary The cyclone separation unit includes a plurality of flat-level cyclone cones. The multiple cyclone cones are located above the first-level cyclone separation unit, and the lower end of each cyclone cone is inserted into the first-level cyclone separation unit. Larger garbage and part of the dust in the work are separated from the air flow in the first-level cyclone separation unit, large particles of garbage and foreign objects will be collected in the first dust chamber of the outer ring; then the airflow with some fine dust particles enters In multiple flat cyclones, most of the dust particles are separated by multiple flat cyclones and collected in the second dust chamber of the inner circle of the first dust chamber.

The inventor found in practical work that this type of dust cup assembly has the problems of being easily damaged, low in working reliability, not easy to clean, bulky overall structure, and laborious to hold the whole machine. In this regard, the inventor conducted in-depth research and creatively discovered that the dust cup assembly of this wireless handheld vacuum cleaner, because the second-level cyclone separation unit is located above the first-level cyclone separation unit and the dust cylinder, and from the shape of the second The first-level cyclone separation unit is exposed, which makes the structure of the dust cup assembly complex. At the same time, the sealing requirements of the second-level cyclone separation unit are high, which is not easy to clean and disassemble. Moreover, the first-level cyclone separation unit takes up a large volume, making dust collection The volume of the cavity is small, and the ash storage capacity is insufficient. In addition, the surface of the primary cyclone separation unit has a large number of meshes and meshes and a large area. The problem of dust clogging often occurs during use, which is difficult to clean and time-consuming. .

In order to solve at least one of the above technical problems, this application proposes the following technical solutions.

Hereinafter, referring to FIGS. 1-19, a handheld cleaning device 100 according to an embodiment of the present application will be described.

As shown in FIGS. 1 and 2, the handheld cleaning device 100 according to an embodiment of the present application may include: a host assembly 1 and a dust cup assembly 2, where the host assembly 1 may include a straw portion 11, a suction portion 12, and a handle portion 13 and a power supply portion 14, a handle portion 13 is used for hand-held grasping, the power supply portion 14 may include a battery, etc., and is used to supply power to the suction portion 12 to drive the suction portion 12 to generate a flowing air flow, wherein the suction portion 12 may include a motor And the fan, when the motor is powered by the power supply unit 14, the motor can drive the fan to rotate, thereby creating a negative pressure suction airflow, the dust cup assembly 2 is provided on the host assembly 1, and the airflow is connected between the suction pipe portion 11 and the suction portion 12 That is to say, the suction pipe portion 11 is in airflow communication upstream of the dust cup assembly 2, and the suction portion 12 is in airflow communication downstream of the dust cup assembly 2, so that when the suction portion 12 generates a negative pressure, the suction pipe portion 11 can suck in The dust air flow supplies the dust-containing air flow to the dust cup assembly 2 for dust gas separation, and the air flow separated by the dust cup assembly 2 flows to the suction part 12 and is discharged. Of course, the present application is not limited to this. In other embodiments of the present application, the host assembly 1 may not include the straw part 11. At this time, the dust cup assembly 2 may be integrated with a straw section.

As shown in FIG. 3, the dust cup assembly 2 may include: a cup shell 21 and a cyclone separation device, the cup shell 21 has a dust collection chamber 210, the cyclone separation device is provided in the cup shell 21, and the cyclone separation device includes a primary cyclone separator 22 and the secondary cyclone 23, the primary cyclone 22 is connected to the upstream of the secondary cyclone 23, that is to say, the airflow sucked by the suction pipe portion 11 is first fed into the primary cyclone 22 to realize a primary cyclone After separation, the airflow separated by the primary cyclone 22 then enters the secondary cyclone 23 for secondary cyclone separation, thereby improving the cyclone separation effect of the dust cup assembly 2. Of course, the present application is not limited to this. In other embodiments of the present application, the dust cup assembly 2 may further include more cyclones.

With reference to FIGS. 4 and 5, the primary cyclone separator 22 includes a body portion 221. The body portion 221 is configured as a cyclone chamber and/or a cyclone channel 2210 is defined in the body portion 221. That is, the structure of the body portion 221 does not For example, it may include at least the following three examples. In example one (the example is not shown in the figure), the body portion 221 may be a cylindrical structure or a cone-shaped structure with filter holes on the barrel body, so that the exterior of the body portion 221 may define a cyclone cavity, which enters the cyclone cavity tangentially The airflow inside can be separated by the cyclone outside the body part 221, the airflow separated by the cyclone can enter the body part 221, and then enter the secondary cyclone 23; Example 2 (as shown in FIGS. 4 and 5), the body part 221 can also be configured as a structure that internally defines the cyclone channel 2210, so that the airflow entering the body portion 221 can flow along the cyclone channel 2210 to achieve cyclone separation, and the airflow separated by the cyclone can then enter the secondary cyclone separator 23; In Example 3 (this example is not shown in the figure), while the cyclone chamber described above is defined outside the body portion 221, the cyclone channel 2210 can also be defined inside the body portion 221, so that cyclone separation can be performed better.

4 and 5, the two-stage cyclone separator 23 includes a plurality of cyclone cones 2310 arranged in stages, the dust outlet of the body portion 221 (such as the dust outlet of the cyclone chamber, the dust outlet of the cyclone channel 2210, as shown in FIG. 8 The first dust outlet 22101 shown) and the dust outlet of each cyclone 2310 (the second dust outlet 23101 shown in FIG. 5) are all connected to the dust collection chamber 210. Among them, "multiple cyclone cones 2310 level setting" refers to: multiple cyclone cones 2310 are arranged in parallel so that the multiple cyclone cones 2310 can be separated in order without cyclone, so that the multiple cyclone cones 2310 can be sucked into one stage simultaneously The airflow discharged from the cyclone separator 22 simultaneously performs two-stage cyclone separation, simultaneously discharges dirt to the dust collection chamber 210, and simultaneously discharges clean airflow.

As shown in FIG. 5, the plurality of cyclone cones 2310 surround the body portion 221 along the circumferential direction of the body portion 221, that is, the plurality of cyclone cones 2310 surround a cylindrical space, and the body portion 221 is all provided in the cylindrical shape In the space, or more than 90% of the body portion 221 is provided in the cylindrical space, or only the end edge of the body portion 221 is not surrounded by the plurality of cyclone cones 2310. It should be noted that, when the body portion 221 is configured as a cyclone cavity, and the plurality of cyclone cones 2310 surround the body portion 221 in the circumferential direction of the body portion 221, the cylindrical space surrounded by the plurality of cyclone cones 2310 may be The arc-shaped plate 2312 (refer to FIG. 3) is provided so that the arc-shaped plate 2312 extends along the arrangement direction of the cyclone cone 2310, and the arc-shaped plate 2312 is fixed on the cyclone cone 2310, so that the arc-shaped plate 2312 can be used to define the cyclone cavity The outer cavity wall improves the cyclone separation effect of the cyclone cavity.

Thus, because the secondary cyclone 23 surrounds the body portion 221, instead of sequentially arranging the primary cyclone 22 and the secondary cyclone 23 in the axial direction, the compactness of the cyclone device is improved, The axial height of the cyclone separation device is reduced, and thus the overall axial height of the dust cup assembly 2 is reduced. Therefore, when the dust cup assembly 2 is used in the handheld cleaning device 100, the center of gravity of the entire handheld cleaning device 100 can be optimized In this way, the user can hold the cleaning device 100 for cleaning operation more easily and improve the user experience.

In addition, since the secondary cyclone 23 surrounds the primary cyclone 22, it is possible to improve the cleaning effect of the secondary cyclone 23 while maintaining the compactness of the cyclone separation device, and extend the primary cyclone The path from the separator 22 to the secondary cyclone 23 to improve the cyclone separation effect and reduce noise (the longer the air flow path, the greater the noise loss and the lower the noise). For the handheld cleaning device 100, the handheld cleaning device The distance between 100 and the operator is closer, and the noise of the handheld cleaning device 100 has a greater impact on the operator. When the noise of the handheld cleaning device 100 is effectively controlled, it can better meet the user's use requirements.

In addition, since the secondary cyclone 23 surrounds the primary cyclone 22, the primary cyclone 22 can obtain the protection of the secondary cyclone 23, thereby improving the service life of the primary cyclone 22 and Working reliability, in addition, because the secondary cyclone 23 is also located in the cup shell 21, so that the secondary cyclone 23 can also obtain the protection of the cup shell 21, thereby improving the service life and work of the secondary cyclone 23 reliability. Moreover, since the cyclone separation devices are all provided inside the cup shell 21, the sealing can be implemented simply and effectively, the sealing effect is more reliable, and it is convenient for the disassembly and cleaning of the dust cup assembly 2.

In some embodiments of the present application, as shown in FIG. 2, the dust cup assembly 2 and the host assembly 1 can be detachably connected, thereby facilitating cleaning and cleaning. Here, it should be noted that the manner of detachable connection between the dust cup assembly 2 and the host assembly 1 is not limited, for example, it can be connected by a snap structure, a spin structure, or the like. The structure of the buckle structure and the buckle structure are well known to those skilled in the art. For example, the buckle structure may include the projection 41 shown in FIG. 2 and the rotating slide 42 shown in FIG. 6 (as shown in FIG. 6 according to The edge structure of the cup shell 21 according to an embodiment of the present application), the rotating slide 42 has an entrance 421 and a locking end 422, and after the projection 41 enters the rotating slide 42 from the entrance 421, it rotates to the locking end 422 It can be locked afterwards. Thus, by connecting the dust cup assembly 2 and the host assembly 1 through the spin-buckle structure, the cost can be reduced, the structure can be simplified, the airtightness effect can be improved, and the airflow leakage problem can be improved. In addition, as shown in FIG. 3, the first-level cyclone 22 and the second-level cyclone 23 can also be detachably connected (for the specific detachable connection method, see the following description), and the second-level cyclone 23 and the cup shell 21 can also be detachably connected (the specific detachable connection method can be described later), so as to facilitate further cleaning.

In some embodiments of the present application, as shown in FIG. 3, the cup shell 21 may have a plurality of protrusions 2112, the number of protrusions 2112 is the same as the number of cyclone cones 2310, and each protrusion 2112 is defined within A positioning groove is formed, and the shape of the positioning groove matches the shape of the cyclone cone 2310, so that when the secondary cyclone separator 23 is assembled in the cup shell 21, the multiple positioning grooves can correspond to the multiple cyclone cones 2310 in one-to-one correspondence Positioning can not only reduce the difficulty of assembling the secondary cyclone separator 23, but also improve the assembly reliability of the secondary cyclone separator 23.

In some embodiments of the present application, as shown in FIG. 4, when the handheld cleaning device 100 is placed on a horizontal plane, the central axis L1 of the primary cyclone 22 and the central axis L2 of the secondary cyclone 23 coincide and act as The longitudinal axis L3 of the dust cup assembly 2 is parallel to or coincides with the longitudinal axis L4 of the suction portion 12 and extends in the lateral direction. The suction portion 12 is located on the rear side of the dust cup assembly 2 and the handle portion 13 is located on the rear side of the suction portion 12, and the power supply portion 14 is located below the handle portion 13. Here, it should be noted that the “rear” referred to herein refers to the side near the operator when the handheld cleaning device 100 is in use, and the opposite side is the “front”, that is, the side away from the operator. In addition, the “lateral direction” mentioned herein refers to a horizontal direction (ie, a direction parallel to the horizontal plane), or a substantially horizontal direction (ie, a direction with an angle less than 10° to the horizontal plane).

Thus, since the longitudinal axis L3 of the dust cup assembly 2 is parallel to or coincides with the longitudinal axis L4 of the suction portion 12, the suction path from the dust cup assembly 2 to the suction portion 12 can be shortened, so that the energy consumption for suction can be reduced To improve cleaning efficiency. In addition, the overall layout of the handheld cleaning device 100 described above can enable the user to hold the cleaning device 100 for cleaning with less effort, and improve the user's operating experience. In addition, the hand-held cleaning device 100 of this structural shape takes up less space and is convenient for storage. Therefore, the airflow discharged from the dust cup assembly 2 can flow to the suction portion 12 along a straight line or substantially along a straight line without bending, so that airflow loss and noise can be reduced.

In some embodiments of the present application, as shown in FIG. 8, when the handheld cleaning device 100 is placed such that the longitudinal axis L3 of the dust cup assembly 2 extends vertically, the dust collection chamber 210 is located at the bottom of the cup shell 21, one level The cyclone separator 22 and the secondary cyclone separator 23 are both located above the dust collection chamber 210, and the side wall of the cup shell 21 has an air inlet 2111. When the cyclone channel 2210 is defined in the body portion 221, the primary cyclone separator 22 An inlet portion 222 is also included. The inlet portion 222 defines an air inlet channel 2220. The outlet end 2222 of the inlet portion 222 communicates tangentially to the cyclone channel 2210, so that the air inlet channel 2220 feeds airflow in the tangential cyclone channel 2210, thereby The cyclone separation effect of the cyclone channel 2210 can be effectively improved. With reference to FIGS. 2 and 9, the inlet end 2221 of the inlet portion 222 is passed through the space between two adjacent cyclone cones 2310 to connect to the air inlet 2111 to flow The airflow passing through the air inlet 2111 can enter the air inlet channel 2220 from the inlet end 2221, and then enter the cyclone channel 2210 from the outlet end 2222 tangentially.

Thus, by arranging the inlet portion 222 of the primary cyclone 22 on the side wall of the cup 21 above the dust collection chamber 210, the inlet portion 222 can be prevented from occupying the dust collection chamber 210, thereby improving the dust collection chamber 210 Dust storage capacity, and by passing the inlet portion 222 between two adjacent cyclone cones 2310, the space can be fully utilized, and the installation of the inlet portion 222 avoids affecting the secondary cyclone 23, Ingenious structure.

Of course, the present application is not limited to this, and the air inlet position of the primary cyclone 22 can also be specifically set according to actual requirements. For example, in other embodiments of the present application, the inlet end 2221 of the inlet portion 222 can also be passed through the dust collector The cavity 210 extends toward the bottom wall of the cup shell 21 to achieve air intake from the cup lid 213 of the cup shell 21 (this example is not shown in the figure), and no further details will be given here.

As shown in FIG. 4, when the hand-held cleaning device 100 is placed on a horizontal surface, the air inlet 2111 may be located at the bottom of the cup shell 21, and the straw portion 11 is located below the dust cup assembly 2. Referring to FIG. 8, the straw portion 11 defines the suction The channel 111 and the elbow channel 112, the axis L5 of the suction channel 111 is parallel to the longitudinal axis L3 of the dust cup assembly 2, the front end of the suction channel 111 is the dirty air inlet 1110, and the elbow channel 112 is formed by the rear end of the suction channel 111 It extends upward to communicate with the air inlet 2111 on the cup shell 21 or the inlet end 2221 on the inlet portion 222. Thus, in addition to the purpose of supplying air to the dust cup assembly 2, the straw portion 11 can also play a role of supporting the dust cup assembly 2, thereby reducing the stress at the connection between the dust cup assembly 2 and the main assembly 1 To further improve the connection strength and connection reliability of the dust cup assembly 2 and the host assembly 1.

Of course, the present application is not limited to this, in other embodiments of the present application, the straw portion 11 may also be provided in other positions, for example, when the handheld cleaning device 100 is placed on a horizontal surface, the handheld cleaning device 100 may also be set as a straw portion 11 is located in the middle of the dust cup assembly 2 (such as shown in FIGS. 20-22) or above (the example is not shown in the figure), etc.

As shown in FIGS. 20-22, the handheld cleaning device 100 may further include a straw portion 11 and a connecting portion 5. When the handheld cleaning device 100 is placed on a horizontal surface, the air inlet 2111 is located in the middle of the cup shell 21 (see FIG. 20-FIG. In 21, the air inlet 2111 is formed in a spatial range W in which the distance from the upper end and the lower end of the dust cup assembly 2 is greater than 1/3 times the total height H of the dust cup assembly 2). The suction pipe portion 11 is located below the dust cup assembly 2 and defines an suction passage 111 whose axis L5 is parallel to the longitudinal axis L3 of the dust cup assembly 2 and the front end of the suction passage 111 is a dirty air inlet 1110 connected with a pipe The portion 5 extends in the up-down direction and the upper end is connected to the air inlet 2111, and the lower end is communicated with the rear end of the suction passage 111. Thus, different practical requirements can be met.

Optionally, as shown in FIGS. 20-22, the connecting portion 5 may include a first connecting portion 51 and a second connecting portion 52 that are detachably connected, the first connecting portion 51 belongs to a part of the host assembly 1, the second connecting portion The pipe section 52 belongs to a part of the dust cup assembly 2. The first connecting pipe section 51 and the casing of the straw portion 11 can be fixed as an integral structural member to ensure that the lower end of the first connecting pipe section 51 is reliably connected to the rear end of the suction channel 111, and the second The connecting pipe section 52 and the cup shell 21 of the dust cup assembly 2 may be fixed as an integral structural member to ensure that the upper end of the second connecting pipe section 52 is reliably connected to the air inlet 2111. Thus, on the one hand, the smooth disassembly of the main assembly 1 and the dust cup assembly 2 can be ensured. On the other hand, when the dust cup assembly 2 is assembled to the main assembly 1, only the first connecting pipe segment visible to the human eye and reachable can be ensured The upper end of 51 is sealingly connected with the lower end of the second connecting pipe section 52 to ensure the leak-free communication between the straw portion 11 and the dust cup assembly 2, thereby reducing the difficulty of sealing the connection between the dust cup assembly 2 and the host assembly 1.

As shown in FIG. 8, the suction tube portion 11 may further have a through hole 113 located on the side of the elbow channel 112 away from the suction channel 111 (as shown in the rear side of the elbow channel 112 in FIG. 8) And, the through hole 113 penetrates in a direction perpendicular to the extending direction of the suction channel 111 (left-right direction as shown in FIG. 5) for finger lifting. Thus, the user can use the through hole 113 to lift or hold the cleaning device 100, which is convenient for use in different occasions, and when installing the dust cup assembly 2 and the host assembly 1, the operator can grasp through the through hole 113 The host assembly 1 completes the installation of the dust cup assembly 2 with less effort and convenience.

Optionally, as shown in FIG. 8 and FIG. 9, the cross-sectional area of the inlet portion 222 gradually decreases along the airflow direction (that is, the air intake direction), that is, the cross-sectional area of the air inlet channel 2220 extends from The direction from the inlet end 2221 to the outlet end 2222 gradually decreases, whereby the effect of accelerating the airflow into the cyclone channel 2210 can be achieved, thereby improving the cyclone separation effect of the airflow entering the cyclone channel 2210.

Optionally, as shown in FIGS. 2 and 3, the inlet end 2221 of the inlet portion 222 passes through the air inlet 2111 to the outside of the cup 21, and the shape of the inlet end 2221 of the inlet portion 222 is adapted to the shape of the air inlet 2111 And positioning coordination, thereby, on the one hand, the sealing difficulty between the inlet end 2221 and the air inlet 2111 can be reduced, on the other hand, the cup shell 21 can position the primary cyclone 22 through the cooperation of the air inlet 2111 and the inlet end 2221, Thereby, the assembly efficiency of the first-level cyclone 22 is improved, and the working reliability of the first-level cyclone 22 is improved.

In addition, it should be noted that the cross-sectional shapes of the inlet portion 222 and the air inlet channel 2220 are not limited, and may be square, round, etc., for example, and may be specifically set according to actual requirements. For example, in the specific example shown in FIG. 9, when the inlet portion 222 is a tubular member of equal wall thickness, in order to make the cross-sectional area of the air inlet channel 2220 gradually decrease along the flow direction of the airflow, the inlet portion 222 can be The two axial end surfaces of the stage cyclone 22 (surface a1 and surface a2 shown in FIG. 9) are set as parallel surfaces, and the two side surfaces connecting the two end surfaces are connected (see FIG. 9) The surface b1 and the surface b2) shown in FIG. 2 are set to have different slopes, so that the inlet end 2221 can be rectangular, which facilitates positioning with the air inlet 2111 and facilitates processing of the inlet portion 222, and can effectively ensure the air inlet channel The cross-sectional area of 2220 gradually decreases along the inlet direction.

Next, the dust cup assembly 2 according to some embodiments of the present application will be described.

As shown in FIGS. 2 and 9, the secondary cyclone separator 23 may include two cone groups 231, each cone group 231 includes a plurality of cyclone cones 2310, and the two cone groups 231 are along the primary cyclone separator 22 In the circumferential direction, the inlet portion 222 is penetrated by the gap 2311 between the two cone groups 231 to be connected to the air inlet 2111. Thereby, the space can be fully utilized, and the assembly of the primary cyclone 22 and the secondary cyclone 23 is facilitated. In addition, as shown in FIG. 10, when the two cone groups 231 have an axisymmetric structure, a gap 2311 is defined between the two ends of the two cone groups 231, and the inlet 222 can pass through the gap 2311 on either side To achieve assembly, this reduces the difficulty of assembling the secondary cyclone 23, that is to say, when the two cone groups 231 are installed or reversed, they can be assembled with the primary cyclone 22, thereby improving Assembly efficiency. In addition, the two cone groups 231 may be separate components, or may be fixed as an integral structural member by a splitter end plate 232 described below.

Further, as shown in FIG. 3, FIG. 5 and FIG. 11, the dust collection chamber 210 may include a primary dust collection chamber 2101 and two secondary dust collection chambers 2102. The primary dust collection chamber 2101 and the cyclone channel 2210 A dust outlet 22101 communicates, and two secondary dust collection chambers 2102 respectively communicate with second dust outlets 23101 of a plurality of cyclone cones 2310 in two cone groups 231, that is, one of the secondary dust collection chambers 2102 and one cone The second dust outlets 23101 of the plurality of cyclone cones 2310 in the group 231 communicate with each other, and the other secondary dust collection chamber 2102 communicates with the second dust outlets 23101 of the plurality of cyclone cones 2310 in the other cone group 231.

Therefore, since the cyclone separation systems at all levels are respectively provided with special dust collection chambers 210, the ash discharge mixing and lifting of the cyclone separation systems at all levels can be avoided, thereby improving the cyclone separation efficiency, and at the same time simplifying the structure, making The layout of the dust cup assembly 2 is more reasonable, and it is more convenient for pouring and cleaning.

For example, in the specific examples shown in FIGS. 3 and 11, the cup shell 21 may include an outer shell 211 and two inner plates 212, and the two inner plates 212 are disposed symmetrically on the outer layer with respect to the centerline of the air inlet 2111. On both sides in the shell 211, the inner surfaces of the two inner plates 212 and the outer shell 211 together define a primary dust collection chamber 2101, and the outer surface of each inner plate 212 and the outer shell 211 A secondary dust collection chamber 2102 is defined respectively. Thereby, the structure of the dust collection chamber 210 is simple. When the inner layer plate 212 and the outer layer shell 211 are an integrally formed piece, the first-stage dust collection chamber 2101 and the second-stage dust collection chamber 2102 can be obtained without assembly, and the first-stage collection The isolation between the dust chamber 2101 and the secondary dust collection chamber 2102 is good.

As shown in FIGS. 3-5, the cup shell 21 may further include a cup cover 213, which is switchably provided at an axial end of the outer shell 211 and used to switch the primary dust collection chamber 2101 and the secondary dust collection chamber 2102, for example, when the handheld cleaning device 100 is provided on a horizontal surface, and when the suction part 12 is located on the rear side of the dust cup assembly 2, the cup cover 213 may be switchably located at the front end of the outer shell 211, so that After the cup assembly 2 is removed from the host assembly 1, and the cup cover 213 is opened forward, the dust in the dust cup assembly 2 can also be poured out, which is very convenient for pouring dust. In addition, there may be a gasket 214 between the cup cover 213 and the outer shell 211 and the inner shell 212. The gasket 214 may extend into the secondary dust collection chamber 2102 to further improve the primary dust collection chamber 2101 and the secondary The isolation effect of the dust collection chamber 2102.

As shown in FIGS. 3 and 5, the primary cyclone 22 may further include a central filter cylinder 223, the axis of the central filter cylinder 223 coincides with the axis of the cyclone channel 2210 (ie, the central axis L1 of the primary cyclone 22 ), The central filter cartridge 223 is passed through the body portion 221 so that the cyclone channel 2210 surrounds the central filter cartridge 223. The central filter cartridge 223 defines a transition channel 2230. The sidewall of the central filter cartridge 223 has a filter hole 2231 through which the transition channel 2230 passes The filter hole 2231 communicates with the cyclone channel 2210 so that the airflow separated from the cyclone channel 2210 can enter the transition channel 2230 through the filter hole 2231 to further improve the dust-gas separation effect through the filter hole 2231. Thus, since the primary cyclone 22 is located in the secondary cyclone 23, the overall area of the central filter cartridge 223 is reduced, thereby reducing the possibility of the central filter cartridge 223 being blocked, and improving the cleaning efficiency of the whole machine .

As shown in FIGS. 3 and 12-13, the two-stage cyclone separator 23 may further include a splitter end plate 232 and an air outlet end cover 233. The splitter end plate 232 is provided at the end of the cyclone cone 2310 away from the dust collection chamber 210. The air outlet end cover 233 is provided on the side of the split end plate 232 away from the cyclone cone 2310 and defines a communication channel 2320 between the split end plate 232 and the split end plate 232 is defined in the communication channel 2320 and is connected to each cyclone The cones 2310 correspond to the connected tangential inlets 2321, respectively, and the end of the central filter cartridge 223 away from the dust collection chamber 210 is opened to communicate with the communication channel 2320, thereby communicating with each tangential inlet 2321.

Thus, the airflow separated by the first cyclone in the cyclone channel 2210 can first enter the transition channel 2230, and then be discharged into the communication channel 2320 through the transition channel 2230, and the airflow entering the communication channel 2320 enters through multiple tangential inlets 2321 respectively In the plurality of cyclone cones 2310, secondary cyclone separation is performed. Preferably, the side walls of adjacent tangential inlets 2321 are smoothly and excessively connected together, so that the loss of airflow can be reduced, thereby improving separation efficiency and reducing noise.

As shown in FIGS. 3 and 14-15, the air outlet end cover 233 may have a plurality of air outlet pipes 2331, the number of the air outlet pipes 2331 is the same as the number of the cyclone cones 2310, and one-to-one correspondence is provided. Each air outlet The first end 23311 of the tube 2331 passes through the splitter end plate 232 to extend into the corresponding cyclone cone 2310, and the second end 23312 of each air outlet tube 2331 is located on the vent end cover 233 away from the splitter end plate 232 One side and open, so that the airflow from the secondary cyclone separator in the cyclone cone 2310 can enter the air outlet pipe 2331 through the first end 23311 of the air outlet pipe 2331, and then pass through the second end of the air outlet pipe 2331 23312 is discharged to the side of the air outlet end cover 233 away from the splitter end plate 232.

As shown in FIGS. 3 and 5, the secondary cyclone 23 may further include an upper end seal 234 and a lower end seal 235, wherein the upper end seal 234 may be sealed between the splitter end plate 232 and the air outlet end cover 233, the lower end The seal 235 can be sealed at the connection between the cyclone cone 2310 and the secondary dust collection chamber 2102. When the secondary cyclone separator 23 includes two cone groups 231, there can be two lower seals 235, each of the lower seals 235 seals the joints between the lower ends of the plurality of cyclone cones 2310 on the corresponding cone group 231 and the corresponding secondary dust collection chamber 2102 respectively.

As shown in FIG. 5, the hand-held cleaning device 100 may further include a filter assembly 3. The filter assembly 3 may include a filter cotton 31 and a filter cotton support 32. The filter assembly 3 may be provided on a side of the air outlet end cover 233 away from the split end plate 232 Side, so that the airflow discharged from the second end 23312 of the air outlet pipe 2331 can flow to the filter assembly 3 for further filtering to obtain cleaner air.

Among them, as shown in FIG. 2, the filter assembly 3 may belong to the host assembly 1, that is, it has a positioning cooperation relationship with the components on the host assembly 1, so that when the dust cup assembly 2 is removed from the host assembly 1, it remains in the host assembly 1 on. Of course, the present application is not limited to this. As shown in FIG. 14, the filter assembly 3 may also belong to the dust cup assembly 2, that is, have a positioning and matching relationship with the components on the dust cup assembly 2, so that the dust cup assembly 2 can be removed from the host assembly 1 When removed, it remains on the dust cup assembly 2. The present application is not limited to this, the filter assembly 3 can also belong to neither the host assembly 1 nor the dust cup assembly 2, that is to say, the filter assembly 3 has no positioning cooperation relationship with the host assembly 1 and the dust cup assembly 2. When the dust cup assembly 2 and the host assembly 1 are installed in place, the filter assembly 3 is interposed between the host assembly 1 and the dust cup assembly 2.

As shown in FIGS. 3 and 5, a specific assembly process of the cyclone separation device may be as follows (but not limited to this assembly method): the body portion 221 and the inlet portion 222 of the first-level cyclone separator 22 are integrally formed pieces, The body portion 221 has a convex block 41 on the inner wall of the lower end, and a rotary slide 42 on the outer wall of the lower end of the central filter cartridge 223. The rotary slide 42 and the convex block 41 form a rotating buckle structure connected to each other, thereby achieving a primary cyclone separation Assembly of the device 22.

As shown in FIGS. 3 and 5, the plurality of cyclone cones 2310 and the splitter end plate 232 are integrally formed pieces. The center of the splitter end plate 232 has a central hole 2322, and the upper end of the center filter cylinder 223 has a buckle. On the edge of the central hole 2322 of the central filter cartridge 223, so as to realize the connection between the secondary cyclone 23 and the primary cyclone 22, then a lower end seal 235 can be sleeved on the lower end of the cyclone cone 2310, and the split end plate The upper end seal 234 and the air outlet cover 233 are installed on the upper end of the 232 in sequence, so that the cyclone separation device can be obtained, and then the cyclone separation device can be inserted into the cup shell 21 to make the cyclone cone 2310 and the protrusion 2112 on the cup shell 21 The positioning grooves inside form a positioning fit, and at the same time, the inlet end 2221 of the inlet part 222 and the air inlet 2111 on the cup shell 21 form a positioning fit. In short, the first-level cyclone separator 22 and the second-level cyclone separator 23 can be connected together by a corresponding structure to form a cyclone separation device and then put together into the cup shell 21, the arrangement is reasonable, and the dust can be easily poured, And it's easier to clean up.

As shown in FIG. 5, the air outlet end cover 233 may have a split protrusion 2332 extending toward the center hole 2322, so that when the airflow enters the communication channel 2320 with the center hole 2322, it can be dispersed by the split protrusion 2332 to further Quickly enter multiple tangential entrances 2321 respectively. In addition, as shown in FIG. 8, the bottom of the body portion 221 may have a skirt structure 2211, and there is no contact and gap between the skirt structure 2211 and surrounding parts (such as the secondary cyclone 23, etc.), thereby ensuring a large The trash can smoothly enter the first-level dust collection chamber 2101 along the gap of the outer edge of the skirt structure 2211, thereby improving the cleaning efficiency. In addition, as shown in FIG. 16, the cross-sectional shape of the body portion 221 is not limited, and may be a circle or an ellipse. When the cross-section of the body portion 221 is an ellipse, the separation of the primary cyclone 22 can be improved effectiveness.

In addition, it should be noted that the number of cyclone cones 2310 included in the two-stage cyclone separator 23 according to an embodiment of the present application, and the arrangement of the plurality of cyclone cones 2310 are not limited to those in the drawings and the above embodiments, and The connection method between the first-level cyclone 22 and the second-level cyclone 23 is not limited to those described in the above embodiments, and these can be selected and set according to actual requirements. In addition, the structural shape of the cup shell 21 is not limited, and there may be structural accessories such as a dust baffle 215 in the cup shell 21, which will not be repeated here.

Hereinafter, the working process of the handheld cleaning device 100 according to an embodiment of the present application will be briefly described.

As shown in FIGS. 5 and 8, when the suction part 12 is in operation: the air fluid entrained with garbage is sucked from the suction pipe part 11 and enters the cyclone channel 2210 through the air inlet channel 2220, and the airflow in the cyclone channel 2210 reaches the first dust outlet 22101 Under the action of centrifugal force and gravity, garbage and large particles of impurities are thrown out into the first-level dust collection chamber 2101, and finally the garbage settles at the bottom of the first-level dust collection chamber 2101; at the same time, the airflow thrown out of the cyclone channel 2210 The carried tiny dust is separated through the filter hole 2231 on the middle filter cylinder, and the airflow enters the transition channel 2230 and rises into the communication channel 2320. The airflow in the communication channel 2320 enters the multiple cyclone cones through the multiple tangential inlets 2321 In 2310, under the action of centrifugal force and gravity, most of the dust enters the secondary dust collection chamber 2102 from the second dust outlet 23101 of the cyclone cone 2310, and the air flow with a small amount of very small dust will be discharged through the air outlet pipe 2331 It reaches the side of the air outlet end cover 233 near the suction part 12, and then flows to the suction part 12 through the filter assembly 3. Therefore, when the cyclone separation device is in operation, the airflow from the cyclone channel 2210 needs to pass a long path to enter the multiple cyclone cones 2310, so that it can have a better cyclone separation effect and lower noise.

In the description of the present application, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise specifically limited.

In this application, unless otherwise clearly specified and limited, the terms "installation", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , Or integrated; it can be directly connected or indirectly connected through an intermediary, it can be the connection between the two elements or the interaction between the two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. In this application, unless clearly specified and defined otherwise, the first feature is “on” or “under” the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly through an intermediary contact.

In the description of this specification, the description referring to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means specific features described in conjunction with the embodiment or examples , Structure, material or characteristic is included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, without contradicting each other, those skilled in the art may combine and combine different embodiments or examples and features of the different embodiments or examples described in this specification.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art may understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and purpose of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

A hand-held cleaning device, characterized in that it includes:

A host assembly, the host assembly includes a suction portion, a handle portion, and a power supply portion, the handle portion is used for handheld gripping, the power supply portion supplies power to the suction portion to drive the suction portion to generate a flowing air flow;

A dust cup assembly, the dust cup assembly is provided on the host assembly, and the airflow is connected upstream of the suction part, the dust cup assembly includes: a cup shell and a cyclone separation device provided in the cup shell , The cup shell has a dust collection cavity, the cyclone separation device includes a primary cyclone separator and a secondary cyclone separator, the primary cyclone airflow is connected to the upstream of the secondary cyclone separator, so The first-level cyclone separator includes a body portion, and the second-level cyclone separator includes a plurality of cyclone cones arranged in stages, and the plurality of cyclone cones surround the body portion along the circumferential direction of the body portion, so The dust outlet of the body portion and the dust outlet of each cyclone cone are connected to the dust collection chamber.
The hand-held cleaning device according to claim 1, wherein when the hand-held cleaning device is placed on a horizontal plane, the central axis of the primary cyclone and the central axis of the secondary cyclone coincide and As the longitudinal axis of the dust cup assembly, the longitudinal axis of the dust cup assembly is parallel to or coincides with the longitudinal axis of the suction portion and both extend in the lateral direction, and the suction portion is located on the rear side of the dust cup assembly The handle portion is located on the rear side of the suction portion, and the power supply portion is located below the handle portion.
The hand-held cleaning device according to claim 2, wherein when the hand-held cleaning device is placed such that the longitudinal axis of the dust cup assembly extends vertically, the dust collection chamber is located at the bottom inside the cup shell , The first-level cyclone separator and the second-level cyclone separator are both located above the dust collection chamber, the cup shell has an air inlet on the side wall, and a cyclone channel is defined in the body portion, the one The cyclone separator further includes an inlet portion, an outlet end of the inlet portion communicates tangentially to the cyclone channel, and an inlet end of the inlet portion is passed through by a space between two adjacent cyclone cones To the air inlet.
The hand-held cleaning device according to claim 3, wherein the host assembly further includes a straw portion, the straw portion is in airflow communication upstream of the dust cup assembly, and the hand-held cleaning device is placed on the horizontal plane When going up, the air inlet is located at the bottom of the cup shell, the suction pipe portion is located below the dust cup assembly, the suction pipe portion defines an air suction channel and a curved tube channel, the axis of the air suction channel is parallel to the The longitudinal axis of the dust cup assembly, the front end of the suction channel is a dirty air inlet, and the elbow channel extends upward from the rear end of the suction channel to communicate with the air inlet or The inlet end on the inlet portion communicates.
The hand-held cleaning device according to claim 3, wherein the hand-held cleaning device further includes a straw portion and a connecting tube portion, when the hand-held cleaning device is placed on the horizontal plane, the air inlet is located in the cup shell The suction tube is located below the dust cup assembly and defines an suction channel, the axis of the suction channel is parallel to the longitudinal axis of the dust cup assembly, the front end of the suction channel is dirty air In the inlet, the connecting pipe portion extends in the up-down direction, the upper end is connected to the air inlet, and the lower end is in communication with the rear end of the suction passage.
The hand-held cleaning device according to claim 4 or 5, wherein the suction tube portion has a through hole, the through hole is located on a side of the elbow channel away from the suction channel, and The extending direction of the suction channel is perpendicular to the direction for carrying the finger.
The hand-held cleaning device according to any one of claims 3-6, wherein the cross-sectional area of the inlet portion gradually decreases along the air flow direction.
The hand-held cleaning device according to any one of claims 3-7, wherein an inlet end of the inlet portion passes through the air inlet to the outside of the cup shell, and the inlet portion of the inlet portion The shape of the inlet end is adapted to the shape of the air inlet and is positioned and matched.
The handheld cleaning device according to any one of claims 3-8, wherein the secondary cyclone separator includes two cone groups, and each of the cone groups includes a plurality of the cyclone cones, The two cone groups are spaced apart along the circumferential direction of the primary cyclone separator, and the inlet portion is passed through the gap between the two cone groups to connect to the air inlet.
The hand-held cleaning device according to claim 9, characterized in that the dust collection chamber includes a primary dust collection chamber and two secondary dust collection chambers, the primary dust collection chamber and the dust of the cyclone channel The outlets are connected, and the two second-level dust collection chambers respectively communicate with the dust outlets of the plurality of cyclone cones in the two cone groups.
The handheld cleaning device according to any one of claims 1-10, wherein the dust cup assembly is detachably connected to the host assembly.